/Engine/Plugins/Runtime/GameplayAbilities/Source/GameplayAbilities/Public/AbilitySystemBlueprintLibrary.h
Gets the original instigator actor that started the chain of events to cause this effect
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintPure, Category="Ability|EffectContext", Meta=(DisplayName="GetOriginalInstigatorActor")) static [AActor](API\Runtime\Engine\GameFramework\AActor) * EffectContextGetOriginalInstigatorActor ( [FGameplayEffectContextHandle](API\Plugins\GameplayAbilities\FGameplayEffectContextHandle) EffectContext )